Use bidirectional text in Keynote on Mac
Keynote supports bidirectional text, so you can enter and edit text written from left to right (such as in English or Chinese) and from right to left (such as in Arabic or Hebrew) in the same presentation. To use bi-directional text, you must have at least one right-to-left language in your device’s preferred language list. To learn more, see Set up a keyboard or other input source for another language.
Although you can use any Keynote themes to create a bidirectional presentation, you can use themes designed specifically for another language. To see these themes, you must set the primary language of your Mac to that language. Choose Apple menu 
Change paragraph text direction
In the Format
sidebar, click the Text tab.In the Alignment section, click
.The insertion point moves to the other side of the object and the paragraph direction changes.
Enter text, then press Return at the end of the paragraph.
The next paragraph continues in the same direction. To change its direction, click
.
If you select multiple paragraphs with different text directions and then click , the paragraphs are formatted to match the first paragraph in the selection.
If you can’t see , you may not have a right-to-left language in your computer’s preferred language list. To add a language to your preferred language list, choose Apple menu 
, then select a language.